Traditional visual simultaneous localization and mapping (SLAM) systems typically generate sparse or semi-dense point cloud maps, which are insufficient for effective navigation path planning. Constructing maps through dense depth estimation generally entails high computational costs, is prone to errors in weakly textured regions such as road surfaces. Furthermore, traditional SLAM methods rely on local relative coordinate systems, making it extremely challenging merge results from different...

The accuracy of localization and mapping automated guided vehicles (AGVs) using visual simultaneous (SLAM) is significantly reduced in a dynamic environment compared to static due incorrect data association caused by objects. To solve this problem, robust stereo SLAM algorithm based on region rejection proposed. first detects feature points from the fundamental matrix consecutive frames then divides current frame into superpixels labels its boundaries with disparity. Finally, regions are...

Solar thermal and photovoltaic unit on traditional PV/T system are restrict each other because the collector is installed unit. Some coating cover plates were prepared with thermochromic materials of that application in industry, textiles daily life. The plate will adjust its optical properties due to temperature. An innovative was established. comprehensive experimental device set up for carrying out test simulation. Comparing fluid beam-splitting system, there more difference ray...

Summary As a new type of lateral load‐resisting system in SPSW systems, corrugated SPSWs (CSPSWs) have been gradually researched and applied. Corrugated plates offer various advantages over flat including higher energy dissipation capacity, ductility, out‐of‐plane stiffness, improved buckling stability. For seismic control isolation techniques, low yield point (LYP) steels (LY100, LY160, LY225) are the reliable ideal energy‐dissipating materials. The CSPSWs combine high energy‐consuming...

According to the experimental results of long-base silicon magnetic sensitive diode, this paper adopted ATLAS software establish two dimensional simulation model in order research negative resistance characteristics diode. Deep impurities were introduced into long base study effect concentration and distribution deep on current-voltage The showed that impurity was main factor impacted

In this paper, an electromagnetic excitation resonant sensor was designed based on Microelectromechanical system (MEMS) technology. new sensor, four nc-Si/c-Si heterojunction p-MOSFETs are manufactured by using the technique of MEMS N-type orientation high resistance silicon wafer, and a Wheatstone bridge is composed MOSFETs channel resistances, output voltage circuit changes according to applied pressure. A vibration will be generated when alternating current inductance coil maximum power...

The compressible transient model of solar chimney power plant system was proposed. It added to the pressure equation and ideal gas state basis on heat balance for collector model. air flow station can be easily calculated with improved results dynamic changes total difference in were good agreement given actual measured values references. considered influence fluid density. structural efficiency analyzed established shown that significantly height its diameter. decreased a convergent shape...

In the process of railway engineering construction, it is easy to appear great hidden trouble, and management effect poor, which can not solve construction problem in real time. A visual supervision system for based on BIM technology designed. The Nano Pi 2Fire chip GPS locator are designed hardware. software, data collected, database constructed technology, realized. Using way test, good, adapt worth popularizing.

This paper describes a kind of silicon-based plane spiral inductance coil ,whose layout size and fabrication technology process are given. The production adopts the method an internal down-lead produced by ohm contact electrode which is formed heavily boron- diffused Al evaporated on surface N-type high resistivity silicon wafer. Processing cup back wafer using Microelectromechanical system (MEMS) technology, basis thickness reduction substrate, porous array substrate about 5μm obtained...

For guaranteeing the safety of railway operating, this paper puts forward a new theory electrical equipment maintenance. Set up uniform data standard and format, maintain information through computer network; created maintenance plan base on information, controlled monitored situation completion operation; by dint workflow mechanism, achieved normative executing complicated flow, reduced workload; used SMS alerts for approval, made it convenient to carry out execution. This method can...

In order to solve the accident problem when vehicle was turning at a high speed, steering of in-wheel motors driven electric studied. First, working principle hub-type permanent magnet brushless DC motor The drive control scheme selected. Then, by analyzing advantages electronic differential technology, overall system determined. Finally, test four vehicles carried out verify its feasibility. results show that most suitable for voltage control. ensured met steering. Therefore, wheels are...

This paper designs a micro-pump silicon diaphragm vibration pickup sensor. In this newsensor which is based on piezoresistive effect, four MOSFETs with nc-Si/c-Si heterojunction drainand source are manufactured the surface of wafer by using technique CMOS andPECVD, at edge <100> orientation N-type rectangle, and MEMStechnology, back device substrate processed into cup, whichconstitutes The sensornot only has all advantages conventional force sensitive resistance sensor, butalso small...

The photovoltaic and solar thermal units are mutually constrained in conventional Solar Photovoltaic/Thermal (PV/T) systems which usually mainly generates electricity collects heat as a supplement. In the situation for main-demand energy, PV/T overall efficiency is lower, so an innovation system based on energy supplemented power proposed. And reversible thermochromic materials from chemical field applied to collectors coating of decoupling with energy. thermoelectric performance PV panels,...

Conventional photovoltaic/thermal (PV/T) systems mainly generate electricity, while heat collecting is just a by-product. In the case of using more thermal energy, if electricity from PV unit used to up medium, overall efficiency system will be low. To address this problem, PV/T based on vacuum tube collectors with reversible thermochromic coating proposed. system, photovoltaic and photothermal modules are set separately, output ratio two units regulated by color-changing characteristics...

Download This Paper Open PDF in Browser Add to My Library Share: Permalink Using these links will ensure access this page indefinitely Copy URL DOI

The paper shows that coupled resonator filters with the frequency-dependent coupling coefficients which vary linearly normalized lowpass frequency can be transformed into equivalent circuits frequency-independent while maintaining filter response. In particular, topology and strength of determined beforehand according to actual situation. It is convenient build a circuit model simulate response under dependent A example designed simulation results are in good agreement theory verifies...